Contains more than five million cross-searchable pages sourced from books, pamphlets, newspapers, periodicals, legal documents, court records, monographs, manuscripts, and maps from many different countries covering the history of the slave trade from the 17th century to the late 19th century. Material published through partnerships with more than 60 libraries at institutions such as the Amistad Research Center, the National Archives, Oberlin College, Oxford University, the Schomburg Center for Research in Black Culture, and Yale University.